Conference paper
Standard 1D solar atmosphere as initial condition for MHD simulations and switch-on effects
P.-A. Bourdin
orcid.org/0000-0002-6793-601X
; Institut für Weltraumforschung, Österreichische Akademie der Wissenschaften, Graz, Austria
Abstract
Many applications in Solar physics need a 1D atmospheric model as initial condition or as reference for
inversions of observational data. The VAL atmospheric models are based on observations and are widely used
since decades. Complementary to that, the FAL models implement radiative hydrodynamics and showed the shortcomings
of the VAL models since almost equally long time. In this work, we present a new 1D layered atmosphere that spans
not only from the photosphere to the transition region, but from the solar interior up to far in the corona.
We also discuss typical mistakes that are done when switching on simulations based on such an initial condition
and show how the initial condition can be equilibrated so that a simulation can start smoothly. The 1D atmosphere we
present here served well as initial condition for HD and MHD simulations and should also be considered as reference
data for solving inverse problems.
Keywords
Stellar atmospheres; MHD; inversions
Hrčak ID:
143564
URI
Publication date:
20.11.2014.
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